[R] problem with attr()
Gardar Johannesson
gardar at stat.ohio-state.edu
Wed Nov 27 21:41:02 CET 2002
I got this wired behaviour of the attr() function using R-1.6.1 on both
linux redhat 7.3 (i386) and Solaris 8 (Sparc):
> tmp <- list(id=1)
>
> attr(tmp,"n.ch") <- 2
> attr(tmp,"n") <- 1
> tmp
$id
[1] 1
attr(,"n.ch")
[1] 2
attr(,"n")
[1] 1
>
> attributes(tmp)
$names
[1] "id"
$n.ch
[1] 2
$n
[1] 1
> attr(tmp,"names")
[1] "id"
> attr(tmp,"n.ch")
[1] 2
> attr(tmp,"n")
NULL
>
The attr()function doesn't find the 'n' attribute, however, if I don't
create the 'n.ch' attribute, it finds it! That is:
> tmp <- list(id=1)
> attr(tmp,'n')
NULL
> attr(tmp,'n') <- 1
> attr(tmp,'n')
[1] 1
>
--
_________________________________________________________
Gardar Johannesson
Department of Statistics
The Ohio State University
304E Cockins Hall, 1958 Neil Ave.
Columbus, OH 43210
Email: gardar at stat.ohio-state.edu Tel: (614) 292-1567
Web: www.stat.ohio-state.edu/~gardar Fax: (614) 292-2096
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